Tyre pressure monitoring system (TPMS)*1 - general
Tyre pressure monitoring (TPMS) (Tyre Pressure Monitoring System)* warns the driver when the pressure is too low in one or more of the car's tyres.
Tyre pressure monitoring uses sensors located inside the air valve in each wheel. When the car is driven at about 30 km/h the system detects the tyre pressure. If the pressure is too low then a warning lamp 
illuminates in the combined instrument panel and one of the following messages is shown:
- Tyre pressure low Check front right tyre
- Tyre pressure low Check front left tyre
- Tyre pressure low Check rear right tyre
- Tyre pressure low Check rear left tyre
- Tyre needs air now Check front right tyre
- Tyre needs air now Check front left tyre
- Tyre needs air now Check rear right tyre
- Tyre needs air now Check rear left tyre
- Tyre pressure system Service required
If wheels without TPMS sensors are used or if a sensor has failed then Tyre pressure system Service required will be shown.
Always check the system after changing a wheel in order to ensure that replacement wheels work with the system.
For information on the correct tyre pressure, see Tyres - air pressure.
The system does not replace normal tyre maintenance.
Important
If a fault occurs in the TPMS system the warning lamp 
in the combined instrument panel will flash for approx. 1 minute and then illuminate with a constant glow. A message is also shown in the combined instrument panel.
in the combined instrument panel will flash for approx. 1 minute and then illuminate with a constant glow. A message is also shown in the combined instrument panel.